SMB3: Honor 'seal' flag for multiuser mounts

commit cc15461c73d7d044d56c47e869a215e49bd429c8 upstream.

Ensure multiuser SMB3 mounts use encryption for all users' tcons if the
mount options are configured to require encryption. Without this, only
the primary tcon and IPC tcons are guaranteed to be encrypted. Per-user
tcons would only be encrypted if the server was configured to require
encryption.

Signed-off-by: Paul Aurich <paul@darkrain42.org>
CC: Stable <stable@vger.kernel.org>
Signed-off-by: Steve French <stfrench@microsoft.com>
Reviewed-by: Aurelien Aptel <aaptel@suse.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/fs/cifs/connect.c b/fs/cifs/connect.c
index 3545b237187a83223bb69424fc5090a31e35fb83..937e7d853751116e6e8c31fc7b02e2eb0b9660ed 100644 (file)
--- a/fs/cifs/connect.c
+++ b/fs/cifs/connect.c
@@ -4216,6 +4216,7 @@ cifs_construct_tcon(struct cifs_sb_info *cifs_sb, kuid_t fsuid)
        vol_info->no_linux_ext = !master_tcon->unix_ext;
        vol_info->sectype = master_tcon->ses->sectype;
        vol_info->sign = master_tcon->ses->sign;
+       vol_info->seal = master_tcon->seal;
 
        rc = cifs_set_vol_auth(vol_info, master_tcon->ses);
        if (rc) {